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FlashVolt™ Joule Heating System

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Joule Heating System

Product Detail

ACS Material LLC is pleased to introduce our advanced ultrafast joule heating (UJH) equipment, also referred to as flash joule heating or shockwave heating apparatus. This innovative approach enables the rapid heating of materials to exceptionally high temperatures within milliseconds. It works by passing a current through a resistive material, which rapidly converts the electricity to heat—thousands of Kelvins in 0~10 seconds. The FlashVolt™ Joule Heating System opens many exciting possibilities as it allows materials to be heated much faster and to extremely high temperatures than traditional methods.

UJH has been used for many specialized applications, such as sintering ceramics, synthesizing metallic glasses, and welding carbon nanofibers. It’s also used to synthesize large-scale 2D materials, such as transition metal dichalcogenides, an emerging class of materials for use in transistors, solar cells, and catalyst applications.

Fig. 1 - Image of the FlashVolt™ Joule Heating System

Product Specifications

Product Name

FlashVolt™ Joule Heating System


Model A

Model B

Temperature Measurement Method and Range

Monochromatic temperature measurement; 250-2000ºC (wavelength 1.6um)

Monochromatic temperature measurement; 700-3000ºC (wavelength 1.0um)

Power Supply

Three-Phase 208V/56A

Output Voltage


Output Current


Current Ramp Time


Data Acquisition Cycle*


Data Communication Mode


Data Collection Mode

Touch Screen

Data Control Mode

Touch Screen

Data Collection Content

Real-time Temperature, Real-time Voltage, and

Real-time Current.

Clamping Electrode

Adjustable distance type

Long-term Heat Preservation**


Probe Cooling Mode


Vacuum Chamber

SS304 stainless steel, square

Vacuum Chamber Volume


Observation Window Diameter

Φ16mm sapphire

Air Circuit Device

2-way intake, 1-way vacuum, and 1-way exhaust.

Vacuum Pump

VRD-4 (Vacuum pump values can be directly controlled on the Joule Heating System’s Touch Screen)

Sample Table Material

Graphite paper, graphite tube, carbon paper, etc.

Size of Metal Sample (customizable)


Sample Test Volume***

About 500MG (Specific gravity=1) Up to 3 grams.

Overall Dimensions

About 650*850*1100mm (host machine)


Cooling Circulator (2P) and Vacuum Pump are optional and not included in the unit.

*The USB port data acquisition cycle is 100ms by default. 5ms is possible as an additional function providing the external data acquisition software as well.
**The long-term maximum temperature achievable by different sample stages is inconsistent and if unnecessary, long-term high-temperature use is not recommended.
***Sample test volume going up to 3 grams require further testing as samples may be heated unevenly.

Program Mode

Quick Mode

Stable Temperature Mode

Check out our blogposts: Ultrafast Joule Heating Technology and 2D Materials and How Ultrafast Joule Heating is Advancing Science

Return Policy: The FlashVolt™ Joule Heating System includes a one-year warranty, during which we offer free maintenance services via remote support (excluding shipping costs). During the warranty period, if the equipment is unfixable, then we can also proceed with a replacement. After the first year, remote maintenance services will be available at an additional charge, with the cost determined based on the specific circumstances and needs of the equipment. 

Disclaimer: ACS Material LLC believes that the information on our website is accurate and represents the best and most current information available to us. ACS Material makes no representations or warranties either express or implied, regarding the suitability of the material for any purpose or the accuracy of the information listed here. Accordingly, ACS Material will not be responsible for damages resulting from use of or reliance upon this information.